import os
import json
import random
from flask import Blueprint, request, jsonify
bp = Blueprint("questions", __name__)


@bp.route("/")
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
SCHEMA_PATH = os.path.normpath(os.path.join(BASE_DIR, '..', 'schema.json'))

def load_questions():
    try:
        with open(SCHEMA_PATH, 'r', encoding='utf-8') as file:
            return json.load(file)
    
    try:
        count = int(count_param)
    except ValueError:
        return jsonify({"error": "Parametr 'count' musí být platné číslo."}), 400


    all_questions = load_questions()
    
    if not all_questions:
        return jsonify({"error": "Soubor schema.json nebyl nalezen nebo je prázdný."}), 500

    if count < 0:
        return jsonify({"error": "Počet otázek nemůže být záporný."}), 400
        
    if count > len(all_questions):
        count = len(all_questions)

    random_questions = random.sample(all_questions, count)

    return jsonify(random_questions) except FileNotFoundError:
        return []

@questions_bp.route('/api/questions', methods=['GET'])
def get_questions():
    count_param = request.args.get('count', default=3)